nuts › self-locking extended washer nuts
EB048
Locking Extended Washer Nut Self
Description
Thread: 1/4-28, high tensile 180,000 psi
Specifications
| Locking Feature | Prevailing torque with nonmetallic insert |
|---|---|
| Material | Steel |
| Material Specification | Aisi4130 assn standard single material response or aisi4340 assn standard single material response or aisi3140 assn standard single material response or sae8740 assn standard single material response |
| Nut Style | Double hexagon |
| Overall Height | 0.334 |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Class 3 federal specification single treatment response type 2 qq-p-416 |
| Temperature Rating | 250 degrees fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | Unjf (fine thread with external controlled root radius) |
| Thread Size | 0.250 |
| Washer Outside Diameter | Between 0.521 inches and 0.531 inches |
| Washer Thickness | 0.09 |
| Width Across Flats | Between 0.362 inches and 0.377 inches |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
No interchangeable or dimensionally similar parts are on record for EB048. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error